Problems getting lagg to balance using lacp

[Steven Hartland]

I've just setup lagg on one of our servers and run some
basic tests and although everything seems to be reporting
correctly no balancing appears to be happening.

The following is the setup:

FreeBSD side:
ifconfig_em0="up"
ifconfig_em1="up"
cloned_interfaces="lagg0"
ifconfig_lagg0="laggproto lacp laggport em0 laggport em1"
ipv4_addrs_lagg0="10.10.1.66/24"

Cisco side:
interface Port-channel2
 description SERVER:: test - lagg0
 switchport
 switchport access vlan 96
 switchport mode access
 no ip address
end

interface GigabitEthernet3/35
 description SERVER:: test - em0
 switchport
 switchport access vlan 96
 switchport mode access
 no ip address
 channel-protocol lacp
 channel-group 2 mode active
end

interface GigabitEthernet3/43
 description SERVER:: test - em1
 switchport
 switchport access vlan 96
 switchport mode access
 no ip address
 channel-protocol lacp
 channel-group 2 mode active
end

Config:-
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4>
        ether 00:30:48:33:ec:44
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4>
        ether 00:30:48:33:ec:44
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        options=3<RXCSUM,TXCSUM>
        inet 127.0.0.1 netmask 0xff000000 
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4>
        ether 00:30:48:33:ec:44
        inet 10.10.1.66 netmask 0xffffff00 broadcast 10.10.1.255
        inet 10.10.1.83 netmask 0xffffffff broadcast 10.10.1.83
        media: Ethernet autoselect
        status: active
        laggproto lacp
        laggport: em1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
        laggport: em0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>

show lacp neighbor                              
Flags:  S - Device is requesting Slow LACPDUs 
        F - Device is requesting Fast LACPDUs
        A - Device is in Active mode       P - Device is in Passive mode     

Channel group 2 neighbors

Partner's information:

          Partner Partner   LACP Partner  Partner   Partner  Partner     Partner
Port      Flags   State     Port Priority Admin Key Oper Key Port Number Port State
Gi3/35    SA      bndl      32768         0x0       0x90     0x1         0x3D  
Gi3/43    SA      bndl      32768         0x0       0x90     0x2         0x3D  


Stats:

      Interface           Traffic               Peak                Total
          lagg0  in      0.351 KB/s        117.349 MB/s            2.695 GB
                 out     0.345 KB/s        114.183 MB/s            8.103 GB

            em1  in      0.233 KB/s        117.349 MB/s            2.695 GB
                 out     0.000 KB/s        132.535 MB/s            8.890 GB

            em0  in      0.116 KB/s          2.701 KB/s          331.405 KB
                 out     0.345 KB/s          9.093 KB/s          631.883 KB


Name    Mtu Network       Address              Ipkts Ierrs    Opkts Oerrs  Coll
em0    1500 <Link#1>      00:30:48:33:ec:44     5381     0     5188     0     0
em1    1500 <Link#2>      00:30:48:33:ec:44  5987608     0  4015584     0     0
lo0   16384 <Link#3>                               0     0        0     0     0
lo0   16384 your-net      localhost                0     -        0     -     -
lagg0  1500 <Link#4>      00:30:48:33:ec:44  5992849     0  4016823     8     0
lagg0  1500 10.10.1.0   test           5985503     -  6475013     -     -
lagg0  1500 10.10.1.83/ jail1       19     -        0     -     -


Anyone got any ideas, as far as I can see lacp is negotiating correctly just
no balancing is happening :(

    Regards
    Steve

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